Sigma 16 mm F1.4 vs. Sony 16-50 mm F3.5-5.6 Kit Lens Comparison

As a non-professional who just likes making videos, I've always wondered whether these expensive (to me) prime lenses were worth the money when the Kit lens from Sony seems like the perfect lens with its small size + zoom ability for the A6400. I eventually bought the Sigma 16 mm F1.4 a month later and have been using it for almost 9 months now. Let's see how they compare:

Music:
"Artificial.Music - Nighttime Stroll" Attribution 3.0 Unported (CC BY 3.0)
Music provided by BreakingCopyright:    • [No Copyright Music] Artificial.Music...  

Track: Patience — Jay Someday [Audio Library Release]
Music provided by Audio Library Plus
Watch:    • Patience — Jay Someday | Free Backgro...  
Free Download / Stream: https://alplus.io/Patience

And So It Begins by Artificial.Music   / artificial-music  
Creative Commons — Attribution 3.0 Unported— CC BY 3.0
Free Download / Stream: https://bit.ly/and-so-it-begins
Music promoted by Audio Library    • And So It Begins – Artificial Music (...